Densities of Solid and Liquid Water by Natalie Komplin https://padlet.com/560841/gg2okop92nh8 en-us 2017-12-18 15:16:45 UTC 2024-10-16 15:00:13 UTC hello@padlet.com Solid Water 560841 https://padlet.com/560841/gg2okop92nh8/wish/217262493 Density of solid water - 0.9340g/cm3
ice is solid water. When water freezes, its molecules move farther apart, making ice less dense than water.
Real world - glaciers covering Earth due to low temperatures
Relationship to chemistry - hydrogen bonding dominating the intermolecular forces, which results in a packing of molecules less compact in the solid. Density of ice increases slightly with decreasing temperature
Relationship to water cycle - during precipitation, water turns to ice in the sky, by the clouds because the temperature in the sky higher up is colder than it is towards the bottom
“When water freezes, it gets less dense. That is why ice cubes float in a glass of water. It also takes a lot of energy removal to freeze water, and the air is usually much colder than the earth at the bottom of the lake. So the cold comes from the air above the lake, and starts freezing the water from the surface.”

Sources -
http://www.pvwc.com/story_of_water/html/3forms.htm
scienceline.ucsb.edu/getkey.php?key=418all
]]> 2017-12-19 15:10:01 UTC https://padlet.com/560841/gg2okop92nh8/wish/217262493 Liquid Water 560841 https://padlet.com/560841/gg2okop92nh8/wish/217521144 Density of liquid water - 1g/mL
Liquid water - water 
Real world - oceans, lakes, ponds, drinking water etc. Glaciers melting creating bodies of fresh water
Relationship to chemistry -  It is composed of one oxygen atom and two hydrogen atoms. Each hydrogen atom is contently bonded to the oxygen via a shared pair of electrons
Relationship to water cycle - basically the main part of the cycle it goes through the evaporation, condensation, precipitation, runoff

Sources -  
https://pmm.nasa.gov/education/water-cycle
www.biology.arizona.edu/biochemistry/tutorials/chemistry/page3.html
]]> 2017-12-20 15:48:19 UTC https://padlet.com/560841/gg2okop92nh8/wish/217521144 Surface Tension on a Penny 560841 https://padlet.com/560841/gg2okop92nh8/wish/217804182 2017-12-22 02:19:03 UTC https://padlet.com/560841/gg2okop92nh8/wish/217804182 Surface Tension on a Penny Video 560841 https://padlet.com/560841/gg2okop92nh8/wish/217804195 2017-12-22 02:20:00 UTC https://padlet.com/560841/gg2okop92nh8/wish/217804195 Density video 560841 https://padlet.com/560841/gg2okop92nh8/wish/217804257 2017-12-22 02:21:28 UTC https://padlet.com/560841/gg2okop92nh8/wish/217804257 Surface Tension 56066 https://padlet.com/560841/gg2okop92nh8/wish/217809352 Definition - tension of the surface of a liquid caused by particles attracting in the surface layer by the bulk of the liquid
Real world example - leaf floating on water due to surface tension
Global Impact - Temperature affects surface tension. Temp increases, tension decreases. Global warming affects global temps which affect surface tension
Relationship to chemistry - intermolecular forces allow the water molecules to attract to each other maintaining the bond and tension.
Relationship to water cycle - allows raindrops maintain their shape during precipitation

Sources -
https://en.wikipedia.org/wiki/Surface_tension
https://en.wikipedia.org/wiki/Intermolecular_force]]> 2017-12-22 05:33:35 UTC https://padlet.com/560841/gg2okop92nh8/wish/217809352 Density 56066 https://padlet.com/560841/gg2okop92nh8/wish/217809881 Definition: the degree of compactness of a substance]]> 2017-12-22 05:50:17 UTC https://padlet.com/560841/gg2okop92nh8/wish/217809881